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624 lines
30 KiB
JavaScript
624 lines
30 KiB
JavaScript
// Weekly (map) page. Imports replace the old script-tag ordering contract.
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import { loadLastLocation, saveLastLocation, locHash } from "./nav.js";
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import { fmtTemp, onUnitChange, toWind, windUnit, precipUnit } from "./units.js";
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import { uv } from "./account.js"; // header sign-in entry + notification bell, and the API-version resolver
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import { loadView, TTL, prefetchViews } from "./cache.js";
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import { initFindButton, setFindLabel } from "./mappicker.js";
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import { W, PW, H, PL, PR, plotTop, plotBot, xLabY, setChartWidth, chartPalette,
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tempChart, precipChart, dryChart, attachChartHover } from "./chart.js";
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import { track } from "./digest.js";
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import { TIER_COLORS, SCALE_TEMP, drynessColor, pctOrd, esc, todayISO, placeLabel,
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tierKeySegs, GUIDE_LINK, fmtPrecip, fmtPrecipTier, fmtWind, fmtHumid } from "./shared.js";
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let selected = null; // {lat, lon}
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const dateInput = document.getElementById("date-input");
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const todayBtn = document.getElementById("today-btn");
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dateInput.value = todayISO();
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dateInput.max = dateInput.value;
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// The "Today" chip snaps the target date back to today; it stays lit while the
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// target already is today, so it doubles as a "you're viewing now" indicator.
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function syncTodayBtn() {
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todayBtn.classList.toggle("active", dateInput.value === todayISO());
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}
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syncTodayBtn();
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todayBtn.addEventListener("click", () => {
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const t = todayISO();
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if (dateInput.value === t) return;
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dateInput.value = t;
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dateInput.max = t;
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syncTodayBtn();
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if (selected) runGrade();
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});
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function selectLocation(lat, lon) {
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selected = { lat, lon };
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// Show the raw coordinates immediately; render() replaces them with the resolved
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// neighborhood + city name once the grade fetch returns.
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locLabel.textContent = `${lat.toFixed(3)}, ${lon.toFixed(3)}`;
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locLabel.hidden = false;
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runGrade();
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}
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// ---- location picker ----
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// The Find button opens the shared modal map picker; choosing a spot loads it.
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const findBtn = document.getElementById("find-btn");
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const locLabel = document.getElementById("loc-label");
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initFindButton(findBtn, "Find a location",
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() => selected, (lat, lon) => selectLocation(lat, lon));
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// ---- hero ----
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// The hero's grade card is server-rendered showing the most unusual city we're
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// tracking; once the visitor has a place of their own it re-points at that. The
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// frame and its text slots already exist in the HTML, so swapping the numbers in
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// shifts nothing on the page.
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const hero = document.getElementById("hero");
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const heroLocate = document.getElementById("hero-locate");
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const heroPick = document.getElementById("hero-pick");
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const heroMsg = document.getElementById("hero-locate-msg");
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function locateMsg(text) {
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if (!heroMsg) return;
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heroMsg.textContent = text || "";
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heroMsg.hidden = !text;
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}
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// Browsers expose geolocation ONLY on secure origins, but `navigator.geolocation`
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// still exists on plain http:// — getCurrentPosition just fails with a permission
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// error. So feature-testing the object is not enough: without the isSecureContext
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// check the button is a dead control on the plain-HTTP LAN dev server (and on any
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// phone reaching it by IP), which is exactly how it shipped broken.
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// Rather than offer a button that cannot work, promote the map picker instead.
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const canLocate = !!navigator.geolocation && window.isSecureContext;
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if (heroLocate && !canLocate) {
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heroLocate.hidden = true;
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heroPick?.classList.replace("btn-ghost", "btn-primary");
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}
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heroLocate?.addEventListener("click", () => {
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track("home.locate");
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const label = heroLocate.textContent;
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const restore = () => {
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heroLocate.disabled = false;
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heroLocate.textContent = label;
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};
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// Geolocation can take seconds (or hang until the timeout), so say so —
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// a button that looks inert is indistinguishable from a broken one.
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heroLocate.disabled = true;
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heroLocate.textContent = "Locating…";
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locateMsg("");
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navigator.geolocation.getCurrentPosition(
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(pos) => {
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restore();
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selectLocation(pos.coords.latitude, pos.coords.longitude);
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},
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(err) => {
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restore();
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// Always say something: a declined prompt or a timeout must not look
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// like the button did nothing.
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locateMsg(
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err.code === err.PERMISSION_DENIED
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? "Location permission was declined. Pick a spot on the map instead."
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: err.code === err.TIMEOUT
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? "That took too long. Try again, or pick a spot on the map."
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: "Your location isn't available right now. Pick a spot on the map instead.",
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);
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},
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{ enableHighAccuracy: false, timeout: 10000, maximumAge: 600000 },
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);
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});
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heroPick?.addEventListener("click", () => { locateMsg(""); findBtn.click(); });
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/** Re-point the hero card at the place the visitor actually chose. */
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function updateHero(data) {
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if (!hero) return;
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const card = document.getElementById("hero-grade");
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const targetDay = data.recent.find((d) => d.date === data.target_date);
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const g = targetDay && (targetDay.tmax || targetDay.tmin);
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if (!card || !g) return;
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document.getElementById("hero-where").textContent = `Today in ${placeLabel(data)}`;
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document.getElementById("hero-band").textContent = g.grade;
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document.getElementById("hero-detail").textContent =
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`${targetDay.tmax === g ? "High temp" : "Low temp"} in the ${pctOrd(g.percentile)} percentile`;
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// Band colour rides the same token set as everything else; the band word is
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// always present too, so colour is never the only signal.
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card.style.setProperty("--cat", TIER_COLORS[g.class] || "");
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hero.querySelector(".grade-why")?.remove();
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}
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dateInput.addEventListener("change", () => { syncTodayBtn(); selected && runGrade(); });
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// ---- grade request + render ----
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const placeholder = document.getElementById("placeholder");
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const results = document.getElementById("results");
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let lastGraded = null; // most recent /api/grade response (for the PNG export)
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// Clicking a graded day (any cell or its date header) opens its full breakdown.
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results.addEventListener("click", (e) => {
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const row = e.target.closest(".rd-grid [data-date]");
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if (!row || !selected) return;
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location.href = `day${locHash(selected.lat, selected.lon, row.dataset.date)}`;
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});
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let gradeSeq = 0; // supersedes an in-flight load when the user picks a new spot/date
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async function runGrade() {
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if (!selected) return;
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updateHash();
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placeholder.hidden = true;
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results.hidden = false;
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// Omit the date when it's today, so the URL (and cache key) matches the prefetch
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// fired from the other views — a same-tab navigation then reuses the response.
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const q = `lat=${selected.lat}&lon=${selected.lon}`;
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const url = dateInput.value === todayISO() ? uv(`grade?${q}`) : uv(`grade?${q}&date=${dateInput.value}`);
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await loadView({
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url, ttl: TTL.grade, seq: ++gradeSeq, current: () => gradeSeq,
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spinner: () => { results.innerHTML = `<p class="spinner">Fetching decades of climate history…</p>`; },
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onData: render,
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onError: (err) => { results.innerHTML = `<p class="error">${err.message}</p>`; },
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});
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}
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// Compact cell formatters for the dense recent/forecast table (units live in the
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// column headers, so values stay short). Dry days label the running dry streak
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// (see precipCell) rather than the rain amount.
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const cTemp = fmtTemp; // active unit, bare degree
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const cHum = (v) => (v == null ? "—" : `${Math.round(v)}%`); // relative %, unit-invariant
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const cWind = (v) => (v == null ? "—" : `${Math.round(toWind(v))}`);
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// fmtPrecip carries the precision: whole millimetres, two decimals for inches.
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const cRain = (v) => (v == null ? "—" : v > 0 ? fmtPrecip(v, false) : "·");
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// Monochrome inline icons (currentColor) so the UI chrome matches the dark theme
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// instead of using colorful emoji. Feather-style line paths.
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const IC = {
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link: `<svg class="ic" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"/><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"/></svg>`,
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download: `<svg class="ic" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>`,
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calendar: `<svg class="ic ic-lg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="3" y="4" width="18" height="18" rx="2"/><line x1="16" y1="2" x2="16" y2="6"/><line x1="8" y1="2" x2="8" y2="6"/><line x1="3" y1="10" x2="21" y2="10"/></svg>`,
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};
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const MONTH_NAMES = ["January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November", "December"];
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// Friendly, plain-language "what to expect" sentences for the selected date's
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// season, built from the ±7-day climatology frequencies (rain_freq / sun_freq)
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// the backend now returns. Rain drives a bit of cute packing advice. Any piece
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// with no data (e.g. sunshine on a NASA/MET-sourced cell) is simply omitted.
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function insightsHTML(data) {
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const c = data.climatology || {};
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const parts = data.target_date ? data.target_date.split("-") : [];
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const monthName = parts.length === 3 ? MONTH_NAMES[+parts[1] - 1] : null;
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const around = monthName ? `around mid-${monthName}` : "this time of year";
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const lines = [];
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const hi = c.tmax && c.tmax.p50 != null ? c.tmax.p50 : null;
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const lo = c.tmin && c.tmin.p50 != null ? c.tmin.p50 : null;
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if (hi != null && lo != null) {
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lines.push(`<li><span class="ins-emoji" aria-hidden="true">🌡️</span> A typical day ${esc(around)} peaks near <b>${fmtTemp(hi, true)}</b> and dips to <b>${fmtTemp(lo, true)}</b>.</li>`);
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}
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if (c.sun_freq != null) {
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const pct = Math.round(c.sun_freq * 100);
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const emoji = c.sun_freq >= 0.6 ? "☀️" : c.sun_freq >= 0.3 ? "⛅" : "☁️";
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const tone = c.sun_freq >= 0.6 ? "plenty of sunshine — " : c.sun_freq < 0.3 ? "often cloudy — " : "";
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lines.push(`<li><span class="ins-emoji" aria-hidden="true">${emoji}</span> ${tone}sunny about <b>${pct}%</b> of days ${esc(around)}.</li>`);
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}
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if (c.rain_freq != null) {
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const pct = Math.round(c.rain_freq * 100);
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let emoji, advice;
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if (c.rain_freq < 0.15) {
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emoji = "🌤️"; advice = "you can probably leave the umbrella at home.";
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} else if (c.rain_freq < 0.4) {
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emoji = "🌦️"; advice = "maybe tuck a compact umbrella in your bag just in case.";
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} else {
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emoji = "🌧️"; advice = "don't forget your favorite umbrella or raincoat!";
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}
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lines.push(`<li class="ins-rain"><span class="ins-emoji" aria-hidden="true">${emoji}</span> Rain on about <b>${pct}%</b> of days ${esc(around)} — ${advice}</li>`);
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}
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if (!lines.length) return "";
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return `<div class="insights">
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<p class="insight-lead">What to expect ${esc(around)}</p>
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<ul class="insight-list">${lines.join("")}</ul>
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</div>`;
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}
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function render(data) {
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recentData = data;
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updateHero(data);
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// The place name appears once — as the results heading (<h2>) below, which also
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// carries the coordinates + climatology context. The top label only holds the
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// transient coordinates written on selection, so hide it now that the named
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// results have rendered (otherwise the name would show twice).
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locLabel.hidden = true;
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locLabel.textContent = "";
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setFindLabel(findBtn, "Change location");
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const c = data.climatology;
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const cell = data.cell;
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const yrs = c.year_range ? `${c.year_range[0]}–${c.year_range[1]}` : "—";
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const coords = `${cell.center_lat.toFixed(3)}, ${cell.center_lon.toFixed(3)}`;
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// Each card compares the target day's value to the normal (median) for that
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// metric, tinted by its grade, and links to the full single-day breakdown. The
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// window now runs past the target into the forecast, so the target is looked up
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// by date rather than taken as the newest row.
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const targetDay = data.recent.find((d) => d.date === data.target_date) || null;
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const dayHref = `day${locHash(selected.lat, selected.lon, data.target_date)}`;
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const cmpCard = (label, key, clim, fmt) => {
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const g = targetDay ? targetDay[key] : null;
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const normalVal = clim ? fmt(clim.p50) : "—";
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const cat = g ? (TIER_COLORS[g.class] || "") : "";
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const big = g ? fmt(g.value) : normalVal;
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const grade = g
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? `<span class="nc-grade" style="--cat:${cat}">${g.grade}</span>`
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: "";
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return `<a class="normal-card" href="${dayHref}">
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<div class="nc-head"><h3>${label}</h3>${grade}</div>
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<div class="big"${g ? ` style="--cat:${cat}"` : ""}>${big}</div>
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<div class="range">normal: <b>${normalVal}</b></div>
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</a>`;
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};
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results.innerHTML = `
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<div class="loc-head">
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<div class="loc-title">
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<h2>${placeLabel(data)}</h2>
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<ul class="loc-meta">
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${data.place ? `<li><b>${coords}</b></li>` : ""}
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<li>Climatology from <b>${yrs}</b></li>
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<li><b>${c.n_samples.toLocaleString()}</b> days sample size (day ±7)</li>
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</ul>
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</div>
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<div class="share">
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<button id="btn-link" title="Copy a link back to this exact view">${IC.link} Copy link</button>
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<button id="btn-png" title="Download the trend chart as an image">${IC.download} Chart</button>
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</div>
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</div>
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<a class="cta-cal" href="calendar${locHash(selected.lat, selected.lon)}">
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<span class="cta-cal-icon" aria-hidden="true">${IC.calendar}</span>
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<span>Check historical data</span>
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<span class="cta-cal-arrow" aria-hidden="true">→</span>
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</a>
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${insightsHTML(data)}
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<div class="section-title">${data.target_date} vs a typical day. Tap a metric for the full breakdown</div>
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<div class="normals">
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${cmpCard("High", "tmax", c.tmax, fmtTemp)}
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${cmpCard("Low", "tmin", c.tmin, fmtTemp)}
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${cmpCard("Feels", "feels", c.feels, fmtTemp)}
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${cmpCard("Humidity", "humid", c.humid, fmtHumid)}
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${cmpCard("Wind", "wind", c.wind, fmtWind)}
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${cmpCard("Gust", "gust", c.gust, fmtWind)}
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${cmpCard("Precip", "precip", c.precip, fmtPrecip)}
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</div>
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<div id="series"></div>
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`;
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renderSeries(); // fills #series (chart + graded-days timeline) from the window
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prefetchViews(selected.lat, selected.lon, ["grade", "forecast"]); // warm calendar/day
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document.getElementById("btn-link").onclick = copyShareLink;
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document.getElementById("btn-png").onclick = downloadChartPng;
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}
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// One tinted value cell: background + value colored by the day's grade tier for
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// that metric (the same diverging scale as everywhere else). Carries the date so
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// tapping any cell opens that day's full breakdown.
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function rdCell(g, fmt, date, isFc, isToday) {
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const dd = date ? ` data-date="${date}"` : "";
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const cls = "rd-c" + (isFc ? " rd-fc" : isToday ? " rd-today" : "");
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if (!g) return `<span class="${cls}"${dd}>—</span>`;
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const col = TIER_COLORS[g.class] || "";
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return `<span class="${cls}"${dd} style="--c:${col}">${fmt(g.value)}</span>`;
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}
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// Precip cell: rain days show the amount (tinted by intensity tier); dry days
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// label the running dry streak — "3d" = 3 days since measurable rain, warmed by
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// the same dryness ramp as the chart — instead of a bare dot.
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function precipCell(d, isFc, isToday) {
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const g = d.precip;
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const dd = ` data-date="${d.date}"`;
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const cls = "rd-c" + (isFc ? " rd-fc" : isToday ? " rd-today" : "");
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if (!g) return `<span class="${cls}"${dd}>—</span>`;
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// Only a genuinely dry day (no rain at all) labels the streak; any rain day —
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// down to sub-0.01" trace that rounds to 0 — shows its depth, tinted by tier.
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if (g.class === "dry" && d.dsr != null && d.dsr > 0) {
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return `<span class="${cls}"${dd} style="--c:${drynessColor(d.dsr)}" title="${d.dsr} days since rain">${d.dsr}d</span>`;
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}
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const col = TIER_COLORS[g.class] || "";
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const amt = g.class && g.class !== "dry" ? fmtPrecipTier(g.value, g.class, false) : cRain(g.value);
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return `<span class="${cls}"${dd} style="--c:${col}">${amt}</span>`;
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}
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// Compact "graded days" table — a ROW per metric, a COLUMN per day (newest first).
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// Wide runs (e.g. 2 weeks) scroll horizontally inside their own container; the
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// metric-label column stays pinned. Tapping any cell/day opens that day's detail.
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// Wind and rain cells are bare numbers to keep the grid narrow, so their row
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// label carries the unit — and has to be built per render, since the unit can
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// change under us (onUnitChange re-renders).
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const RD_METRICS = () => [
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["tmax", "Hi", cTemp], ["tmin", "Lo", cTemp], ["feels", "Feel", cTemp],
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["humid", "Hum", cHum],
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["wind", `Wind <span class="rd-unit">${windUnit()}</span>`, cWind],
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["gust", `Gust <span class="rd-unit">${windUnit()}</span>`, cWind],
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["precip", `Rain <span class="rd-unit">${precipUnit()}</span>`, cRain],
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];
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function daysTable(rows, targetDate) {
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if (!rows.length) return "";
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const todayDate = todayISO();
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const isFc = (d) => d.date > todayDate; // future = forecast columns
|
||
const isTarget = (d) => d.date === targetDate; // the graded target day (orange marker)
|
||
const cols = `grid-template-columns: 46px repeat(${rows.length}, minmax(42px, 1fr));`;
|
||
const header = `<div class="rd-corner"></div>` + rows.map((d) => {
|
||
const dt = new Date(d.date + "T00:00:00");
|
||
const dow = dt.toLocaleDateString(undefined, { weekday: "short" });
|
||
const md = dt.toLocaleDateString(undefined, { month: "numeric", day: "numeric" });
|
||
const cls = "rd-colh" + (isTarget(d) ? " rd-today" : isFc(d) ? " rd-fc" : "");
|
||
return `<div class="${cls}" data-date="${d.date}" title="See the full breakdown for this day"><b>${dow}</b><span>${md}</span></div>`;
|
||
}).join("");
|
||
const body = RD_METRICS().map(([key, label, fmt]) =>
|
||
`<div class="rd-mlabel">${label}</div>` +
|
||
rows.map((d) => key === "precip"
|
||
? precipCell(d, isFc(d), isTarget(d))
|
||
: rdCell(d[key], fmt, d.date, isFc(d), isTarget(d))).join("")
|
||
).join("");
|
||
return `<div class="rd-scroll"><div class="rd-grid" style="${cols}">${header}${body}</div></div>`;
|
||
}
|
||
|
||
// ---- graded-days timeline ----
|
||
// The header normals stay fixed on the target day; the chart + graded-days table
|
||
// below show one continuous window built server-side: two weeks of history before
|
||
// the target, the target itself (orange marker), then the days after it — real
|
||
// observations when they're in the past, the forward forecast when they run into
|
||
// the future (see backend _build_grade).
|
||
let recentData = null; // /grade response — the whole window, newest-first
|
||
|
||
// Repaint everything in the newly-picked unit.
|
||
onUnitChange(() => {
|
||
if (recentData) render(recentData);
|
||
});
|
||
|
||
// Rebuild the chart when the window is resized so its drawing width keeps
|
||
// tracking the container (debounced — resize fires continuously while dragging).
|
||
let resizeTimer = null;
|
||
window.addEventListener("resize", () => {
|
||
clearTimeout(resizeTimer);
|
||
resizeTimer = setTimeout(() => { if (recentData) renderSeries(); }, 160);
|
||
});
|
||
|
||
function renderSeries() {
|
||
const host = document.getElementById("series");
|
||
if (!host || !recentData) return;
|
||
const days = recentData.recent; // newest-first: history · target · after/forecast
|
||
const target = recentData.target_date;
|
||
const hasFc = days.some((d) => d.date > todayISO()); // window runs into the forecast
|
||
host.innerHTML = `
|
||
<div class="section-title">Trend vs normal${hasFc ? " · recent → forecast" : ""}</div>
|
||
<div id="chart-wrap"></div>
|
||
${tierKeyHtml()}
|
||
<div class="section-title">Daily, graded${hasFc ? ": recent & 7-day forecast" : ""}</div>
|
||
<div class="rd-orient"><span>← Older</span><span>Newer →</span></div>
|
||
${daysTable([...days].reverse(), target) || '<p class="muted">Nothing to grade.</p>'}
|
||
`;
|
||
buildChart(recentData);
|
||
scrollTableToTarget(host, target);
|
||
}
|
||
|
||
// Open the timeline centered on the target day's column (the orange marker), so
|
||
// the two weeks of history and the days after it are both in view.
|
||
function scrollTableToTarget(host, target) {
|
||
const scroll = host.querySelector(".rd-scroll");
|
||
if (!scroll) return;
|
||
requestAnimationFrame(() => {
|
||
const col = scroll.querySelector(`.rd-colh[data-date="${target}"]`);
|
||
if (!col) { scroll.scrollLeft = scroll.scrollWidth; return; }
|
||
scroll.scrollLeft = Math.max(0, col.offsetLeft - (scroll.clientWidth - col.offsetWidth) / 2);
|
||
});
|
||
}
|
||
|
||
// ---- trend chart (self-contained inline SVG) ----
|
||
|
||
function tierKeyHtml() {
|
||
// Highest tier first (Near Record hot → Near Record cold).
|
||
const segs = tierKeySegs([...SCALE_TEMP].reverse().map((t) =>
|
||
({ color: TIER_COLORS[t.c], label: t.label })));
|
||
return `<div class="section-title">Grade scale · low → high vs local normal</div>
|
||
<div class="tier-key">${segs}</div>${GUIDE_LINK}`;
|
||
}
|
||
|
||
let chartDays = [];
|
||
// Which chart category is shown. Persisted so a refresh keeps your selection.
|
||
let chartMetric = localStorage.getItem("thermograph:chartMetric") || "tmax";
|
||
|
||
function buildChart(data) {
|
||
const wrap = document.getElementById("chart-wrap");
|
||
const C = chartPalette();
|
||
// Drawing width tracks the on-screen box (see chart.js) so wide monitors gain
|
||
// plot room while phones keep the 720-unit floor (the SVG just scales down).
|
||
setChartWidth(wrap.clientWidth);
|
||
lastGraded = data; // the series currently drawn (for PNG export)
|
||
chartDays = [...data.recent].reverse(); // oldest -> newest
|
||
const days = chartDays, n = days.length;
|
||
if (!n) { wrap.innerHTML = ""; return; }
|
||
const xFor = (i) => (n === 1 ? PL + PW / 2 : PL + (i * PW) / (n - 1));
|
||
|
||
// shared: x date labels
|
||
const step = n > 9 ? 2 : 1;
|
||
let xlab = "";
|
||
days.forEach((d, i) => {
|
||
if (i % step && i !== n - 1) return;
|
||
const dt = new Date(d.date + "T00:00:00");
|
||
xlab += `<text x="${xFor(i).toFixed(1)}" y="${xLabY}" text-anchor="middle" font-size="10.5" fill="${C.muted}">${dt.getMonth() + 1}/${dt.getDate()}</text>`;
|
||
});
|
||
// shared: hover hit targets over the plot
|
||
let hits = "";
|
||
days.forEach((_, i) => {
|
||
const w = n === 1 ? PW : PW / (n - 1);
|
||
hits += `<rect class="hit" data-i="${i}" x="${(xFor(i) - w / 2).toFixed(1)}" y="${plotTop}" width="${w.toFixed(1)}" height="${plotBot - plotTop}" fill="transparent"/>`;
|
||
});
|
||
|
||
const built = chartMetric === "precip" ? precipChart(days, n, xFor, C)
|
||
: chartMetric === "dry" ? dryChart(days, n, xFor, C)
|
||
: tempChart(chartMetric, days, n, xFor, C);
|
||
|
||
// Solid orange marker line ON the target day, plus a dashed "forecast →" divider
|
||
// where the window crosses from the past into the future — drawn only when it's
|
||
// clearly separated from the target marker (i.e. the target is in the past; when
|
||
// the target is today the marker itself already sits at that boundary).
|
||
let marks = "";
|
||
const tIdx = days.findIndex((d) => d.date === data.target_date);
|
||
if (tIdx >= 0) {
|
||
const xt = xFor(tIdx).toFixed(1);
|
||
const td = new Date(data.target_date + "T00:00:00");
|
||
marks += `<line x1="${xt}" y1="${plotTop}" x2="${xt}" y2="${plotBot}" stroke="${C.accent}" stroke-width="1.8" opacity="0.9"/>`
|
||
+ `<text x="${xt}" y="${plotTop - 3}" text-anchor="middle" font-size="9" font-weight="700" fill="${C.accent}">${td.getMonth() + 1}/${td.getDate()}</text>`;
|
||
}
|
||
const fIdx = days.findIndex((d) => d.date > todayISO()); // first forecast (future) day
|
||
if (fIdx > tIdx + 1) {
|
||
const xd = ((xFor(fIdx - 1) + xFor(fIdx)) / 2).toFixed(1);
|
||
marks += `<line x1="${xd}" y1="${plotTop}" x2="${xd}" y2="${plotBot}" stroke="${C.accent}" stroke-width="1.1" stroke-dasharray="4 3" opacity="0.55"/>`
|
||
+ `<text x="${xd}" y="${plotTop - 3}" text-anchor="middle" font-size="8.5" font-weight="700" fill="${C.accent}" opacity="0.8">forecast →</text>`;
|
||
}
|
||
|
||
const title = `${placeLabel(data)} · ${data.target_date}`;
|
||
const svg = `<svg viewBox="0 0 ${W} ${H}" xmlns="http://www.w3.org/2000/svg" font-family="system-ui, -apple-system, Segoe UI, sans-serif" role="img" aria-label="${built.aria}">
|
||
<rect x="0" y="0" width="${W}" height="${H}" fill="${C.surface}"/>
|
||
<text x="${PL - 8}" y="24" font-size="12.5" font-weight="700" fill="${built.color}">${built.subtitle}</text>
|
||
<text x="${W - PR}" y="24" text-anchor="end" font-size="11" fill="${C.muted}">${title}</text>
|
||
${built.content}
|
||
${marks}
|
||
${xlab}
|
||
<line id="crosshair" x1="0" y1="${plotTop}" x2="0" y2="${plotBot}" stroke="${C.muted}" stroke-width="1" stroke-dasharray="3 3" opacity="0"/>
|
||
${hits}
|
||
</svg>`;
|
||
|
||
const btn = (m, label) => `<button type="button" data-metric="${m}"${chartMetric === m ? ' class="active"' : ""}>${label}</button>`;
|
||
wrap.innerHTML = `
|
||
<div class="chart-toggle" id="chart-toggle" role="group" aria-label="Chart metric">
|
||
${btn("tmax", "High")}${btn("tmin", "Low")}${btn("feels", "Feels")}${btn("humid", "Humid")}${btn("wind", "Wind")}${btn("gust", "Gust")}${btn("precip", "Precip")}${btn("dry", "Dry")}
|
||
</div>
|
||
<div class="chart-legend">${built.legend}</div>
|
||
${svg}
|
||
<div id="chart-tip" class="chart-tip" hidden></div>`;
|
||
|
||
document.getElementById("chart-toggle").addEventListener("click", (e) => {
|
||
const b = e.target.closest("button[data-metric]");
|
||
if (!b || b.dataset.metric === chartMetric) return;
|
||
chartMetric = b.dataset.metric;
|
||
try { localStorage.setItem("thermograph:chartMetric", chartMetric); } catch (e) {}
|
||
buildChart(data);
|
||
});
|
||
attachChartHover(wrap, chartDays);
|
||
}
|
||
|
||
// ---- share ----
|
||
function copyShareLink() {
|
||
if (!selected) return;
|
||
const url = `${location.origin}${location.pathname}${locHash(selected.lat, selected.lon, dateInput.value)}`;
|
||
navigator.clipboard.writeText(url).then(
|
||
() => flashBtn("btn-link", "✓ Copied!"),
|
||
() => { prompt("Copy this link:", url); }
|
||
);
|
||
}
|
||
|
||
// Build a table of graded days as SVG markup, stacked below the chart.
|
||
function exportTableSvg(C) {
|
||
const rows = lastGraded.recent; // newest first (matches the on-screen table)
|
||
const rowH = 27, headH = 42, padB = 16;
|
||
const top = H + 10;
|
||
const cDate = PL, cPcp = PL + 150, cHigh = PL + 322, cLow = PL + 494;
|
||
const totalH = top + headH + rows.length * rowH + padB;
|
||
|
||
const cell = (x, g, isPcp) => {
|
||
if (!g) return `<text x="${x}" y="0" font-size="12" fill="${C.muted}">—</text>`;
|
||
const color = TIER_COLORS[g.class] || C.ink;
|
||
const v = isPcp ? `${g.value.toFixed(2)}"` : fmtTemp(g.value);
|
||
return `<text x="${x}" y="0"><tspan font-size="13" font-weight="700" fill="${C.ink}">${v}</tspan>` +
|
||
`<tspan dx="7" font-size="11" font-weight="600" fill="${color}">${esc(g.grade)}</tspan></text>`;
|
||
};
|
||
|
||
const th = (x, t) =>
|
||
`<text x="${x}" y="${top + 30}" font-size="10.5" font-weight="700" letter-spacing="0.05em" fill="${C.muted}">${t}</text>`;
|
||
|
||
let body = "";
|
||
rows.forEach((d, i) => {
|
||
const y = top + headH + i * rowH;
|
||
const dt = new Date(d.date + "T00:00:00");
|
||
const dstr = dt.toLocaleDateString(undefined, { weekday: "short", month: "short", day: "numeric" });
|
||
body += `<g transform="translate(0 ${y})">` +
|
||
(i ? `<line x1="${PL}" y1="-7" x2="${W - PR}" y2="-7" stroke="${C.grid}" stroke-width="1"/>` : "") +
|
||
`<text x="${cDate}" y="0" font-size="12.5" fill="${C.ink}">${esc(dstr)}</text>` +
|
||
cell(cPcp, d.precip, true) + cell(cHigh, d.tmax, false) + cell(cLow, d.tmin, false) +
|
||
`</g>`;
|
||
});
|
||
|
||
const markup = `
|
||
<text x="${PL}" y="${top + 8}" font-size="13" font-weight="700" fill="${C.ink}">Recent days, graded: ${esc(placeLabel(lastGraded))}</text>
|
||
${th(cDate, "DATE")}${th(cPcp, "PRECIP")}${th(cHigh, "HIGH")}${th(cLow, "LOW")}
|
||
<line x1="${PL}" y1="${top + headH - 9}" x2="${W - PR}" y2="${top + headH - 9}" stroke="${C.grid}" stroke-width="1.5"/>
|
||
${body}`;
|
||
return { markup, totalH };
|
||
}
|
||
|
||
function downloadChartPng() {
|
||
const chart = document.querySelector("#chart-wrap svg");
|
||
if (!chart || !lastGraded) return;
|
||
const C = chartPalette();
|
||
|
||
// Chart body minus interactive-only layers.
|
||
const clone = chart.cloneNode(true);
|
||
const cross = clone.querySelector("#crosshair"); if (cross) cross.remove();
|
||
clone.querySelectorAll("rect.hit").forEach((r) => r.remove());
|
||
const chartInner = clone.innerHTML;
|
||
|
||
const { markup, totalH } = exportTableSvg(C);
|
||
const xml = `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 ${W} ${totalH}" width="${W * 2}" height="${totalH * 2}" font-family="system-ui, -apple-system, Segoe UI, sans-serif">` +
|
||
`<rect x="0" y="0" width="${W}" height="${totalH}" fill="${C.surface}"/>` +
|
||
chartInner + markup + `</svg>`;
|
||
|
||
const url = URL.createObjectURL(new Blob([xml], { type: "image/svg+xml;charset=utf-8" }));
|
||
const img = new Image();
|
||
img.onload = () => {
|
||
const canvas = document.createElement("canvas");
|
||
canvas.width = W * 2; canvas.height = totalH * 2;
|
||
canvas.getContext("2d").drawImage(img, 0, 0);
|
||
URL.revokeObjectURL(url);
|
||
canvas.toBlob((blob) => {
|
||
const a = document.createElement("a");
|
||
a.href = URL.createObjectURL(blob);
|
||
a.download = `thermograph_${dateInput.value}.png`;
|
||
a.click();
|
||
setTimeout(() => URL.revokeObjectURL(a.href), 1000);
|
||
flashBtn("btn-png", "✓ Saved");
|
||
}, "image/png");
|
||
};
|
||
img.src = url;
|
||
}
|
||
|
||
function flashBtn(id, text) {
|
||
const b = document.getElementById(id);
|
||
if (!b) return;
|
||
const orig = b.innerHTML; // preserve the inline icon markup
|
||
b.textContent = text;
|
||
setTimeout(() => (b.innerHTML = orig), 1600);
|
||
}
|
||
|
||
function updateHash() {
|
||
if (!selected) return;
|
||
history.replaceState(null, "", locHash(selected.lat, selected.lon, dateInput.value));
|
||
saveLastLocation(selected.lat, selected.lon, dateInput.value);
|
||
}
|
||
|
||
// Start where you left off: an explicit link (hash) wins, otherwise the last
|
||
// place you looked at (remembered across views), otherwise the default world map.
|
||
function restoreFromHash() {
|
||
const loc = loadLastLocation();
|
||
if (!loc) return;
|
||
if (loc.date) dateInput.value = loc.date;
|
||
syncTodayBtn();
|
||
selectLocation(loc.lat, loc.lon);
|
||
}
|
||
restoreFromHash();
|